Glass cutter



April 25, 1939. c wYMAN 2,156,249

GLASS CUTTER Filed Sept. '7, 1957 IN VENT" ATTORNEY. I

Patented Apr. 25, 1939 UNITED STATES GLASS CUTTER Guy 0. Wyman, Chatham, N. J assignor to Landon P. Smith, Inc., Irvington, N. J., a corporation of New Jersey Application September 7, 1937, Serial No. 162,608

2 Claims.

This invention relates to improvements in glass-cutters and is directed more particularly to the provision of a glass-cutter having a novel guard member associated with its head portion.

It is one of the principal objects of the invention to provide a glass-cutter which is novelly constructed so that friction is minimized when its head is in engagement with a template, straight edge or the like, as it is when the cutter is used to out a line on a glass surface which is determined by the template, straight edge or the like. That is to say, during the tracing movement of ordinary cutters, there is invariably a considerable amount of friction set up with, of course, consequent loss of efiiciency and ease of operation. According to the features of this invention, the cutter is so formed that friction is minimized so that cutting is easier and more efficient. 20 It is still another object of the invention to provide means for preventing wearing of the cutter parts. This is brought about by means of the same device which I use to overcome the above-mentioned objections.

Various other objects and advantages of the invention will become more apparent after a reading of the following description which is taken in connection with the accompanying drawing, wherein:

Fig. 1 is a side elevational view of the invention embodying the features of the invention;

Fig. 2 is a perspective view of the guard member shown in Fig. 1;

Fig. 3 is a partial perspective view of the head portion of the cutter shown in Fig. 1; and

Fig. 4 is a side elevational view to explain how the guard member of Fig. 2 may be associated with the part shown in Fig. 3.

Referring now to the drawing in detail, the invention will be more fully described.

Glass cutters of the type with which I am particularly concerned include in general an elongated rod-like handle 2 and what is called a head portion 4. The head 4 is slotted as at 6 and carries a rotatable cutter wheel 8 therein.

It is common to provide spaced notches In in the bottom side of the head, as shown. These are for receiving marginal edge portions of the cut sheets of glass so as to separate the parts thereof.

According to this invention, I also provide a groove or grooves such as [2 in the top side of the head, as shown in Fig. 3. This is for a purpose which Will now appear.

The guard member of the invention, shown in Fig. 2, is preferably formed of a single sheet of relatively thin metal bent into a U-shaped sleeve to accommodate the usual shape of the head portions of glass cutters. It is adapted to receive the head 4 as shown in Fig. 1.

That is, side walls M of the guard are disposed adjacent the side walls of the head While an end wall I 6 may be disposed adjacent the notched bottom side of the head. It will be noticed that the walls [4 and iii of the guard are smooth and in this way, of course, they render the surfaces of the head over which they lie perfectly smooth so that the teeth-forming notches H), for example, cannot engage the template, straight edge or whatever is used to guide the cutter.

Furthermore, the guard being formed of metal may be polished Well so that its outer surfaces are more or less slippery. Thus, engagement of the protected head does not cause undesired friction so ease and efiiciency in operation are attained.

I find it desirable to provide some means for releasably maintaining the clip in its proper position on the head. I therefore provide bent over parts IS in the walls M which are adapted to fit in notches l2. It will be readily appreciated how the grooves l2 and tabs I8 co-operate to prevent the clip from sliding downwardly and off the head when the cutter is in its operating position shown in Fig. 1.

With the parts constructed and arranged as above described, I find that the clip may be easily placed on the head by first moving the same into the relative positions shown in Fig. 4. Then, the guard may be moved rearwardly and upwardly so that its walls are in snug engagement with the three notched sides of the head member.

It will be seen that the guard is not only simple in form so as to be economical to manufacture, but it is readily associated with the glass cutter. It is also susceptible of ornamentation so as to add to the appearance of the cutter.

It should be stated that it is usual to make glass cutters of cast iron which are more or less rough so that when the head is drawn along or around a straight edge, template or the like, there is not the smooth, uninterrupted cutting action desired. With the sheath of this invention, which may cover up the ordinarily rough head and which is preferably perfectly smoothsurfaced, the glass cutter may be drawn with ease and smoothness around the template or the like.

While I have described the invention in great detail, it is not desired to be limited to such detail as many modifications may be made therein without departing from the spirit and scope of the invention. What it is desired to secure by Letters Patent of the United States is:

1. The combination with a glass cutter head having a rotatable wheel in its upper forward end and a recess in its upper side adjacent said forward end of a guard therefor comprising, a single piece of metal bent into the form of a U so as to provide substantially parallel side portions and an intermediate transverse portion, said side portions being in frictional engagement with the side faces of said head and said intermediate transverse portion being in abutment with its lower side, said side portions being formed to have oppositely disposed tabs extending inwardly towards one another from upper sides thereof, which tabs are disposed in said recess so as to prevent the guard from sliding downwardly and off said head.

2. The combination with a glass cutter head having a rotatable wheel in its upper forward end and a recess in its upper side adjacent said forward end and a notch in its lower side of a guard therefor comprising, a single piece of metal bent into the form of a U so as to provide substantially parallel side portions and an intermediate transverse portion, said side portions being in frictional engagement with the side faces of said head and said intermediate transverse portion being in abutment with said lower side so as to conceal said notch, said side portions being formed to have oppositely disposed tabs extending inwardly towards one another from upper sides thereof, which tabs are disposed in said recess so as to prevent the guard from sliding downwardly and ofi said head.

GUY C. WYMAN. 

